From: Cristian Marussi <cristian.marussi@arm.com>
To: Dave Martin <Dave.Martin@arm.com>
Cc: andreyknvl@google.com, shuah@kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v3 01/11] kselftest: arm64: introduce new boilerplate code
Date: Tue, 27 Aug 2019 13:14:28 +0100 [thread overview]
Message-ID: <c6fdb61f-10c9-8c5f-112b-e2072b578c6e@arm.com> (raw)
In-Reply-To: <20190813162337.GY10425@arm.com>
Hi
On 13/08/2019 17:23, Dave Martin wrote:
> ^ Regarding the subject line, "boilerplate code" sounds a bit vague.
> Could we say something like "Add skeleton Makefile"?
>
Yes of course.
> On Fri, Aug 02, 2019 at 06:02:50PM +0100, Cristian Marussi wrote:
>> Added a new arm64-specific empty subsystem amongst TARGETS of KSFT build
>> framework; once populated with testcases, it will be possible to build
>> and invoke the new KSFT TARGETS=arm64 related tests from the toplevel
>> Makefile in the usual ways.
>>
>> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
>> ---
>> Reviewed the build instructions reported in the README, to be more
>> agnostic regarding user/device etc..
>> ---
>> tools/testing/selftests/Makefile | 1 +
>> tools/testing/selftests/arm64/Makefile | 51 ++++++++++++++++++++++++++
>> tools/testing/selftests/arm64/README | 43 ++++++++++++++++++++++
>> 3 files changed, 95 insertions(+)
>> create mode 100644 tools/testing/selftests/arm64/Makefile
>> create mode 100644 tools/testing/selftests/arm64/README
>>
>> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
>> index 25b43a8c2b15..1722dae9381a 100644
>> --- a/tools/testing/selftests/Makefile
>> +++ b/tools/testing/selftests/Makefile
>> @@ -1,5 +1,6 @@
>> # SPDX-License-Identifier: GPL-2.0
>> TARGETS = android
>> +TARGETS += arm64
>> TARGETS += bpf
>> TARGETS += breakpoints
>> TARGETS += capabilities
>> diff --git a/tools/testing/selftests/arm64/Makefile b/tools/testing/selftests/arm64/Makefile
>> new file mode 100644
>> index 000000000000..03a0d4f71218
>> --- /dev/null
>> +++ b/tools/testing/selftests/arm64/Makefile
>> @@ -0,0 +1,51 @@
>> +# SPDX-License-Identifier: GPL-2.0
>> +# Copyright (C) 2019 ARM Limited
>> +
>> +# When ARCH not overridden for crosscompiling, lookup machine
>> +ARCH ?= $(shell uname -m)
>> +ARCH := $(shell echo $(ARCH) | sed -e s/aarch64/arm64/)
>> +
>> +ifeq ("x$(ARCH)", "xarm64")
>> +SUBDIRS :=
>> +else
>> +SUBDIRS :=
>> +endif
>> +
>> +CFLAGS := -Wall -O2 -g
>> +
>> +export CC
>> +export CFLAGS
>> +
>> +all:
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + mkdir -p $$BUILD_TARGET; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>> + done
>> +
>> +install: all
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>> + done
>> +
>> +run_tests: all
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>> + done
>> +
>> +# Avoid any output on non arm64 on emit_tests
>> +emit_tests: all
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>> + done
>> +
>> +clean:
>> + @for DIR in $(SUBDIRS); do \
>> + BUILD_TARGET=$(OUTPUT)/$$DIR; \
>> + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \
>> + done
>> +
>> +.PHONY: all clean install run_tests emit_tests
>> diff --git a/tools/testing/selftests/arm64/README b/tools/testing/selftests/arm64/README
>> new file mode 100644
>> index 000000000000..dee3306071cc
>> --- /dev/null
>> +++ b/tools/testing/selftests/arm64/README
>> @@ -0,0 +1,43 @@
>> +KSelfTest ARM64
>> +===============
>> +
>> +- These tests are arm64 specific and so not built or run but just skipped
>> + completely when env-variable ARCH is found to be different than 'arm64'
>> + and `uname -m` reports other than 'aarch64'.
>> +
>> +- Holding true the above, ARM64 KSFT tests can be run:
>> +
>> + + as standalone (example for signal tests)
>> +
>> + $ make -C tools/testing/selftest/arm64/signal \
>> + INSTALL_PATH=<your-installation-path> install
>> +
>> + and then launching on the target device inside the installed path:
>> +
>> + $ <your-installed-path>/test_arm64_signals.sh [-k | -v]
>> +
>> + + within the KSelfTest framework using standard Linux top-level-makefile
>> + targets:
>> +
>> + $ make TARGETS=arm64 kselftest-clean
>> + $ make TARGETS=arm64 kselftest
>> +
>> + Further details on building and running KFST can be found in:
>> + Documentation/dev-tools/kselftest.rst
>
> The next two paragraphs aren't relevant yet. Can we split them out of
> this patch and add them alongside the relevant code / Makefile changes?
>
Sure. I'm going to remove also standalone mode in V4 as elsewhere advised,
so I'll drop part of this README too.
>> +
>> +- Tests can depend on some arch-specific definitions which can be found in a
>> + standard Kernel Headers installation in $(top_srcdir)/usr/include.
>> + Such Kernel Headers are automatically installed (via make headers_install)
>> + by KSFT framework itself in a dedicated directory when tests are launched
>> + via KSFT itself; when running standalone, instead, a Warning is issued
>> + if such headers cannot be found somewhere (we try to guess a few standard
>> + locations anyway)
>> +
>> +- Some of these tests may be related to possibly not implemented ARMv8
>> + features: depending on their implementation status on the effective HW
>> + we'll expect different results. The tests' harness will take care to check
>> + at run-time if the required features are supported and will act accordingly.
>> + Moreover, in order to avoid any kind of compile-time dependency on the
>> + toolchain (possibly due to the above mentioned not-implemented features),
>> + we make strictly use of direct 'S3_ sysreg' raw-encoding while checking for
>> + those features and/or lookin up sysregs.
>
> This last paragraph is only relevant for people adding new tests. It
> probably makes sense to start "When adding new tests, try to avoid
> unnecessary toolchain dependencies where possible. [...]"
>
> Cheers
> ---Dave
>
Cheers
Cristian
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next prev parent reply other threads:[~2019-08-27 12:14 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 17:02 [PATCH v3 00/11] Add arm64/signal initial kselftest support Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 01/11] kselftest: arm64: introduce new boilerplate code Cristian Marussi
2019-08-13 16:23 ` Dave Martin
2019-08-27 12:14 ` Cristian Marussi [this message]
2019-08-02 17:02 ` [PATCH v3 02/11] kselftest: arm64: adds first test and common utils Cristian Marussi
2019-08-06 15:50 ` Cristian Marussi
2019-08-07 15:42 ` Cristian Marussi
2019-08-09 10:54 ` Cristian Marussi
2019-08-09 11:16 ` Dave Martin
2019-08-09 12:20 ` Cristian Marussi
2019-08-09 12:32 ` Dave Martin
2019-08-12 12:43 ` Amit Kachhap
2019-08-13 13:22 ` Cristian Marussi
2019-08-14 10:22 ` Amit Kachhap
2019-08-27 14:24 ` Cristian Marussi
2019-08-13 16:24 ` Dave Martin
2019-08-28 17:34 ` Cristian Marussi
2019-09-03 15:34 ` Dave Martin
2019-09-03 16:08 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 03/11] kselftest: arm64: mangle_pstate_invalid_daif_bits Cristian Marussi
2019-08-13 16:24 ` Dave Martin
2019-08-29 10:19 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 04/11] kselftest: arm64: mangle_pstate_invalid_mode_el Cristian Marussi
2019-08-13 16:24 ` Dave Martin
2019-08-29 11:50 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 05/11] kselftest: arm64: mangle_pstate_ssbs_regs Cristian Marussi
2019-08-13 16:25 ` Dave Martin
2019-08-29 15:35 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 06/11] kselftest: arm64: fake_sigreturn_bad_magic Cristian Marussi
2019-08-13 16:25 ` Dave Martin
2019-08-30 14:29 ` Cristian Marussi
2019-09-04 10:05 ` Dave Martin
2019-09-04 10:37 ` Cristian Marussi
2019-09-04 10:47 ` Dave Martin
2019-08-02 17:02 ` [PATCH v3 07/11] kselftest: arm64: fake_sigreturn_bad_size_for_magic0 Cristian Marussi
2019-08-13 16:25 ` Dave Martin
2019-08-30 14:49 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 08/11] kselftest: arm64: fake_sigreturn_missing_fpsimd Cristian Marussi
2019-08-13 16:26 ` Dave Martin
2019-08-30 14:55 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 09/11] kselftest: arm64: fake_sigreturn_duplicated_fpsimd Cristian Marussi
2019-08-13 16:26 ` Dave Martin
2019-08-30 15:11 ` Cristian Marussi
2019-08-02 17:02 ` [PATCH v3 10/11] kselftest: arm64: fake_sigreturn_bad_size Cristian Marussi
2019-08-13 16:26 ` Dave Martin
2019-08-30 15:21 ` Cristian Marussi
2019-08-02 17:03 ` [PATCH v3 11/11] kselftest: arm64: fake_sigreturn_misaligned_sp Cristian Marussi
2019-08-07 16:04 ` Cristian Marussi
2019-08-13 16:28 ` Dave Martin
2019-08-30 15:22 ` Cristian Marussi
2019-08-13 16:27 ` Dave Martin
2019-08-30 16:33 ` Cristian Marussi
2019-08-13 16:22 ` [PATCH v3 00/11] Add arm64/signal initial kselftest support Dave Martin
2019-08-30 16:40 ` Cristian Marussi
2019-09-02 10:53 ` Dave Martin
2019-09-02 11:30 ` Cristian Marussi
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